./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3e3e2fbaf5c334dd538c3f4cd3fd09fe8b72613995bc7855bc6c61320098d05a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:54:26,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:54:26,409 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 04:54:26,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:54:26,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:54:26,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:54:26,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:54:26,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:54:26,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:54:26,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:54:26,438 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:54:26,439 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:54:26,439 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:54:26,439 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:54:26,440 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:54:26,440 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:54:26,441 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:54:26,441 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:54:26,442 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:54:26,442 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:54:26,443 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:54:26,443 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:54:26,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:54:26,444 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:54:26,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:54:26,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:54:26,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:54:26,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:54:26,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:54:26,446 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:54:26,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:54:26,447 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:54:26,447 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:54:26,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:54:26,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:54:26,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:54:26,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:54:26,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:54:26,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:54:26,450 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:54:26,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:54:26,453 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:54:26,453 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:54:26,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:54:26,453 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e3e2fbaf5c334dd538c3f4cd3fd09fe8b72613995bc7855bc6c61320098d05a [2024-11-09 04:54:26,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:54:26,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:54:26,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:54:26,755 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:54:26,755 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:54:26,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i Unable to find full path for "g++" [2024-11-09 04:54:28,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:54:29,330 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:54:29,330 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i [2024-11-09 04:54:29,374 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/data/eeb38bb0e/f1efbb6a41b24965a79151a13255e3b8/FLAG1752c6805 [2024-11-09 04:54:29,395 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/data/eeb38bb0e/f1efbb6a41b24965a79151a13255e3b8 [2024-11-09 04:54:29,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:54:29,400 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:54:29,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:54:29,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:54:29,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:54:29,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fe218b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29, skipping insertion in model container [2024-11-09 04:54:29,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,549 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:54:29,862 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i[4504,4517] [2024-11-09 04:54:29,871 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i[4564,4577] [2024-11-09 04:54:31,293 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:31,293 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:31,294 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:31,295 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:31,300 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:31,330 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:31,331 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:31,333 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:31,334 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,203 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,204 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:54:32,385 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:54:32,406 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i[4504,4517] [2024-11-09 04:54:32,410 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i[4564,4577] [2024-11-09 04:54:32,456 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,460 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,461 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,461 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,462 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,475 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,476 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,479 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,480 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,710 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8271] [2024-11-09 04:54:32,712 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,713 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 04:54:32,735 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8757-8768] [2024-11-09 04:54:32,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:54:33,059 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:54:33,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33 WrapperNode [2024-11-09 04:54:33,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:54:33,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:54:33,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:54:33,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:54:33,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33" (1/1) ... [2024-11-09 04:54:33,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33" (1/1) ... [2024-11-09 04:54:33,258 INFO L138 Inliner]: procedures = 679, calls = 2616, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 803 [2024-11-09 04:54:33,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:54:33,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:54:33,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:54:33,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:54:33,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33" (1/1) ... [2024-11-09 04:54:33,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33" (1/1) ... [2024-11-09 04:54:33,279 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33" (1/1) ... [2024-11-09 04:54:33,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33" (1/1) ... [2024-11-09 04:54:33,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33" (1/1) ... [2024-11-09 04:54:33,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33" (1/1) ... [2024-11-09 04:54:33,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33" (1/1) ... [2024-11-09 04:54:33,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33" (1/1) ... [2024-11-09 04:54:33,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:54:33,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:54:33,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:54:33,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:54:33,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33" (1/1) ... [2024-11-09 04:54:33,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:54:33,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:33,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:54:33,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:54:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-09 04:54:33,431 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-09 04:54:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:54:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-09 04:54:33,431 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-09 04:54:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 04:54:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:54:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 04:54:33,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 04:54:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2024-11-09 04:54:33,432 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2024-11-09 04:54:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 04:54:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:54:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 04:54:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:54:33,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:54:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-09 04:54:33,433 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-09 04:54:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-09 04:54:33,433 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-09 04:54:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 04:54:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 04:54:33,433 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 04:54:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 04:54:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 04:54:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 04:54:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2024-11-09 04:54:33,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2024-11-09 04:54:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:54:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:54:33,750 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:54:33,752 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:54:40,814 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-11-09 04:54:40,815 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:54:42,064 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:54:42,065 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 04:54:42,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:54:42 BoogieIcfgContainer [2024-11-09 04:54:42,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:54:42,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:54:42,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:54:42,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:54:42,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:54:29" (1/3) ... [2024-11-09 04:54:42,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2fe8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:54:42, skipping insertion in model container [2024-11-09 04:54:42,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:33" (2/3) ... [2024-11-09 04:54:42,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2fe8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:54:42, skipping insertion in model container [2024-11-09 04:54:42,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:54:42" (3/3) ... [2024-11-09 04:54:42,076 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_left_trim_pred_harness.i [2024-11-09 04:54:42,095 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:54:42,095 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:54:42,160 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:54:42,167 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5bcba136, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:54:42,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:54:42,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-09 04:54:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 04:54:42,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:42,182 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:42,182 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:42,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:42,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1635995076, now seen corresponding path program 1 times [2024-11-09 04:54:42,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:42,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691110584] [2024-11-09 04:54:42,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:42,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:56:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 04:56:36,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:56:36,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691110584] [2024-11-09 04:56:36,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691110584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:56:36,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:56:36,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:56:36,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99866107] [2024-11-09 04:56:36,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:56:36,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 04:56:36,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:56:36,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 04:56:36,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 04:56:36,347 INFO L87 Difference]: Start difference. First operand has 70 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 04:56:38,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:56:39,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:56:39,024 INFO L93 Difference]: Finished difference Result 103 states and 139 transitions. [2024-11-09 04:56:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 04:56:39,027 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 40 [2024-11-09 04:56:39,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:56:39,038 INFO L225 Difference]: With dead ends: 103 [2024-11-09 04:56:39,039 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 04:56:39,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 04:56:39,047 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 04:56:39,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 04:56:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 04:56:39,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-09 04:56:39,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 04:56:39,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2024-11-09 04:56:39,106 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 40 [2024-11-09 04:56:39,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:56:39,110 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2024-11-09 04:56:39,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 04:56:39,111 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2024-11-09 04:56:39,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 04:56:39,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:56:39,113 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:56:39,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:56:39,115 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:56:39,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:56:39,117 INFO L85 PathProgramCache]: Analyzing trace with hash -861825625, now seen corresponding path program 1 times [2024-11-09 04:56:39,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:56:39,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152225889] [2024-11-09 04:56:39,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:39,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:58:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:58:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:58:53,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:58:53,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152225889] [2024-11-09 04:58:53,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152225889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:58:53,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:58:53,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 04:58:53,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477053699] [2024-11-09 04:58:53,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:58:53,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 04:58:53,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:58:53,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 04:58:53,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:58:53,092 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 04:58:55,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:58:57,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:58:59,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:59:02,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:59:04,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:59:06,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:59:09,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:59:11,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:59:13,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:59:16,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:59:20,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:20,385 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2024-11-09 04:59:20,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:59:20,386 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 42 [2024-11-09 04:59:20,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:20,389 INFO L225 Difference]: With dead ends: 89 [2024-11-09 04:59:20,389 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 04:59:20,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:59:20,391 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 50 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 32 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:20,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 503 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 329 Invalid, 10 Unknown, 0 Unchecked, 26.2s Time] [2024-11-09 04:59:20,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 04:59:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2024-11-09 04:59:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.175) internal successors, (47), 42 states have internal predecessors, (47), 24 states have call successors, (24), 9 states have call predecessors, (24), 8 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-09 04:59:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2024-11-09 04:59:20,408 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 42 [2024-11-09 04:59:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:20,409 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2024-11-09 04:59:20,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 04:59:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2024-11-09 04:59:20,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 04:59:20,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:20,412 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:20,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:59:20,412 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:20,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:20,413 INFO L85 PathProgramCache]: Analyzing trace with hash 941180370, now seen corresponding path program 1 times [2024-11-09 04:59:20,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:20,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815544512] [2024-11-09 04:59:20,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:20,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:01:48,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:48,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815544512] [2024-11-09 05:01:48,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815544512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:01:48,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347765915] [2024-11-09 05:01:48,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:48,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:01:48,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:01:48,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:01:48,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40293e32-0a78-4d86-85c5-d9061acb3dc2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:03:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:41,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 7548 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-09 05:03:41,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:03:43,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 05:03:43,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 05:03:44,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 05:04:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:04:03,539 INFO L311 TraceCheckSpWp]: Computing backward predicates...